3" Double-Terminated Barite Crystals with Calcite & Marcasite - Iowa

This is a cluster of double-terminated barite crystals in a marcasite and calcite-rich matrix that was collected from the Linwood Mine of Buffalo, Iowa. The brown color in some of these crystals can be attributed to the contents of the limestone from which they formed.

It comes with an acrylic display stand.

The Linwood Mine has been in operation since 1944: to this day, it ranks as one of the largest limestone mining locations in the United States. On relatively rare occasions, a vug containing minerals will be opened in the mining process, which are then extracted and saved. These vugs often contain beautiful crystal aggregations of calcite, barite, and marcasite, some of which are considered world-class quality specimens.

Barite, commonly spelled baryte, is well-known for its great range of colors and varied crystal forms and habits. = It is a heavy mineral consisting of barium sulfate, and typically has the chemical formula of BaSO4. The barite group consists of baryte, celestine, anglesite, and anhydrite. It is generally white to colorless and is the main source of barium.
Barite, Calcite & Marcasite
Linwood Mine, Buffalo, Scott County, Iowa
3 x 2.9"